You often can. Let's try some exercises:
1) Bill Gates wants to inject poison/5G chips into your body to bring about the 'new world order'
2) COVID-19 is a hoax
3) There is a pedophile ring run by democratic operatives who shield each other
4) 9/11 never happened
5) Asbestos causes cancer
6) All forms of Asbestos cause cancer to the same degree
7) Disinformation is harmful
And so on. For each of these you can figure out for yourself if they are simply positions or disinformation based on the content presented and the lack of or presence of supporting facts.
Also: by stating that something is 100% false you are engaging in the exact fallacy that the article suffers from: you exhibit a degree of certainty that does not leave any room for dissent, making a fruitful discussion impossible because up front you have already indicated your unwillingness to shift your position. A more reasonable line of arguing would have started with 'I disagree, because:'. By declaring your apparent opponents view to be '100% false' up front you actually disqualify yourself.
Disinformation isn't hard to spot. What is hard is to get people to stop spreading it once it is in circulation, and the fact that there are people who get paid to do this - and to do it on both sides of an argument at the same time - shows that there is something a bit more nasty going on than mere disagreement about some details. That you are so ready to pull that cart a little further should worry you.
Censorship is bad, but spreading disinformation under the guise of 'free speech' is also bad. Now you need to figure out a way to stop the second without falling into the first. This is a hard problem, and one that you will not solve by parrotting absolutist positions.